You're attending the college now, but you don't know how many quarter hours you have or what your GPA is? A 2.0 should be a flat C, I believe. Whether that's difficult or not is up to your abilities as a student. If you're on a quarter system, I assume quarter hours=credit hours. I think typical classes are often worth 3 credits, some are worth 4. 45 credit hours is likely three semesters/quarters.